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hrdwdmrbl/split_firefox.sh

Created March 30, 2025 19:26
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A shell script for making copies of Firefox. Each copy runs their own profile so that I can have 3 separate sets of cookies.
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split_firefox.sh
rm -rf /Applications/Firefox\ H.app
rm -rf /Applications/Firefox\ K.app
rm -rf /Applications/Firefox\ P.app
cp -R /Applications/Firefox.app /Applications/Firefox\ H.app
cp -R /Applications/Firefox.app /Applications/Firefox\ K.app
cp -R /Applications/Firefox.app /Applications/Firefox\ P.app
# Copy icons
cp ~/Applications/Split\ Firefox/horse.icns /Applications/Firefox\ H.app/Contents/Resources/firefox.icns
cp ~/Applications/Split\ Firefox/kigurumi.icns /Applications/Firefox\ K.app/Contents/Resources/firefox.icns
cp ~/Applications/Split\ Firefox/personal.icns /Applications/Firefox\ P.app/Contents/Resources/firefox.icns
# Find replace
sed -i '' 's/\<string>Firefox\<\/string>/\<string>Firefox-Personal\<\/string>/g' /Applications/Firefox\ P.app/Contents/Info.plist
sed -i '' 's/\<string>Firefox\<\/string>/\<string>Firefox-Kigurumi\<\/string>/g' /Applications/Firefox\ K.app/Contents/Info.plist
sed -i '' 's/\<string>Firefox\<\/string>/\<string>Firefox-Horse\<\/string>/g' /Applications/Firefox\ H.app/Contents/Info.plist
sed -i '' 's/\<string>org.mozilla.firefox\<\/string>/\<string>org.mozilla.firefox-personal\<\/string>/g' /Applications/Firefox\ P.app/Contents/Info.plist
sed -i '' 's/\<string>org.mozilla.firefox\<\/string>/\<string>org.mozilla.firefox-kigurumi\<\/string>/g' /Applications/Firefox\ K.app/Contents/Info.plist
sed -i '' 's/\<string>org.mozilla.firefox\<\/string>/\<string>org.mozilla.firefox-horse\<\/string>/g' /Applications/Firefox\ H.app/Contents/Info.plist
# NOTE: May require that you set up your own personal cert. in XCode
codesign --deep --force --sign "MyLocalCodeSignCert" /Applications/Firefox\ H.app
codesign --deep --force --sign "MyLocalCodeSignCert" /Applications/Firefox\ K.app
codesign --deep --force --sign "MyLocalCodeSignCert" /Applications/Firefox\ P.app
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hrdwdmrbl commented Jan 16, 2026

Usage

  1. Create the folder ~/Applications/Split\ Firefox
  2. Copy the script to ~/Applications/Split\ Firefox
  3. Replace FIrefox H, Firefox K and Firefox P in the script with your names.
  4. Set up your images within the folder ~/Applications/Split\ Firefox/ so that the copies will have your icons. Icons are just square pngs with the extension switched to .icns.
  5. Give the script execution permission
  6. Run it!

Note: It may require that you set up your own personal cert in XCode for the codesign to work properly.

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